A5028704278- Avian ecology and behavior
- Marine animal studies overview
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Fish Ecology and Management Studies
- Marine and coastal plant biology
- Animal Behavior and Reproduction
- Isotope Analysis in Ecology
- Wildlife Ecology and Conservation
- Polar Research and Ecology
- Species Distribution and Climate Change
- Climate variability and models
- Coral and Marine Ecosystems Studies
- Cryospheric studies and observations
- Identification and Quantification in Food
- Ichthyology and Marine Biology
- Marine Bivalve and Aquaculture Studies
- Marine and coastal ecosystems
- Animal Ecology and Behavior Studies
- Rangeland and Wildlife Management
- Plant and animal studies
- Cephalopods and Marine Biology
- Animal Virus Infections Studies
- Geology and Paleoclimatology Research
- Marine Biology and Ecology Research
H.T. Harvey & Associates
2016-2025
Point Blue Conservation Science
1989-2020
Woods Hole Oceanographic Institution
2007-2020
Cascadia Research Collective
2019
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2019
Ecological Society of America
2017
John Wiley & Sons (United States)
2017
Oceanography Society
2012
William & Mary
2012
Old Dominion University
2012
Abstract We review the scientific literature, especially from past decade, on impacts of human activities Antarctic environment. A range has been identified at a variety spatial and temporal scales. Chemical contamination sewage disposal continent have found to be long-lived. Contemporary management practices many coastal stations are insufficient prevent local but no introduction non-indigenous organisms through this route yet demonstrated. Human activities, particularly construction...
393 M ounting evidence suggests that the earth is experiencing a period of rapid climate change. Never before has it been so important to understand how environmental change influences earth’s biota and distinguish anthropogenic from natural variability. Long-term studies in western Antarctic Peninsula (WAP) region provide opportunity observe changes physical environment are related marine ecosystem. Analyses paleoc limate records (MosleyThompson 1992, Peel Domack et al. 1993, Thompson 1994,...
(1) We studied age-specific breeding success of western gulls (Larus occidentalis) on south-east Farallon Island, California in relation to annual variation food abundance, 1983-89. assessed yearly reproductive performance the basis clutch initiation date, size, hatching and fledging success, number chicks raised independence. categorized age parent into three groups: young, middle-aged old. (2) Mature birds initiated earlier laid larger clutches; they fledged more than younger as a result...
We assess the response of pack ice penguins, Emperor ( Aptenodytes forsteri ) and Adélie Pygoscelis adeliae ), to habitat variability and, then, by modeling alterations, qualitative changes their populations, size distribution, as Earth's average tropospheric temperature reaches 2°C above preindustrial levels (ca. 1860), benchmark set European Union in efforts reduce greenhouse gases. First, we assessed models used Intergovernmental Panel on Climate Change Fourth Assessment Report (AR4)...
Penguins face a wide range of threats. Most observed population changes have been negative and happened over the last 60 years. Today, populations 11 18 penguin species are decreasing. Here we present review that synthesizes details threats faced by world's penguins. We discuss alterations to their environment at both breeding sites on land sea where they forage. The major drivers change appear be climate, food web marine fisheries. In addition, also consider other critical and/or emerging...
Marine protected areas (MPAs) provide an important tool for conservation of marine ecosystems. To be most effective, these should strategically located in a manner that supports ecosystem function. inform spatial planning and support strategic establishment MPAs within the California Current System, we identified predicted to multispecies aggregations seabirds ("hotspots"). We developed habitat-association models 16 species using information from at-sea observations collected over 11-year...
Measurements of the size Adélie penguin (Pygoscelis adeliae) colonies southern Ross Sea are among longest biologic time series in Antarctic. We present an assessment recent annual variation and trends abundance growth rates these colonies, adding to published record not updated for more than two decades. High angle oblique aerial photographic surveys were acquired penguins counted breeding seasons 1981–2012. In last four years numbers Beaufort Island (southern metapopulation) reached their...
Like many polar animals, emperor penguin populations are challenging to monitor because of the species' life history and remoteness. Consequently, it has been difficult establish its global status, a subject important resolve as environments change. To advance our understanding penguins, we combined remote sensing, validation surveys using Bayesian modelling, estimated comprehensive population trajectory over recent 10-year period, encompassing entirety species’ range. Reported indices...
Satellite imagery has been used to document for the first time potential large icebergs substantially alter dynamics of a marine ecosystem. The B‐15 iceberg (∼10,000 km 2 ), which calved off Ross Ice Shelf in biologically productive southwestern Sea, Antarctica, restricted normal drift pack ice, resulting heavier spring/summer ice cover than previously recorded. Extensive reduced both area suitable phytoplankton growth and length algal growing season. Consequently, primary productivity...
Three time series of pelagic bird abundance collected in disparate portions the California Current reveal a 90% decline Sooty Shearwater (Puffinus griseus) between 1987 and 1994. This is negatively correlated with concurrent rise sea‐surface temperatures; Shearwaters have declined while sea temperatures risen. There nine‐month lag response by shearwaters to changing temperatures. The geographical scale our study demonstrates that not localized phenomenon, nor can it be ascribed short‐term...